Welch Allyn SCANTEAM 2380 WAND Specifications download pdf (Page 15)

2–1

Operational Description

OPERATIONAL DESCRIPTION

2.1 Chapter Objectives

This chapter describes:

• Scanner identification key.

• Overview of how the SCANTEAM 2380 works, including scanning

aperture, depth of field and scanning velocity.

• Reading and decoding a bar code symbol. Description of print

contrast, high and low density bar code symbols.

• Discussion of RS–232 interface and external power options.

2.2 Main Elements of the 2380 Bar Code System

The major operational elements of the SCANTEAM 2380 decoded output

scanner keyboard wedge include the scanner optics, the digitizing

electronics and the decoding circuitry.

The key components of the scanner optical system are the illumination

source (LED) and the illumination sensor (photodiode). Both the LED and

photodiode are positioned directly behind a specially designed lens in the

scanner body.

Cable connections are made directly to the board and exit the scanner body

through a flexible strain relief at the end of the wand handle. The integral

cable shield affords EMI and associated drain protection to output signals.

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Welch Allyn SCANTEAM 2380 WAND Specifications Page 15